Fire-extinguisher.



No. 779,435. PATBNTED JAN. l0, 1905. J. E. MURRAY & C. NUHRING.

FIRE EXTINGUISHER.

APPLIUATION FILED APR. 7, 1904.

t 7 al l' ha H14 I ffy-fa/1 f l e I E l H y l' I nvantow lvibwnaaa UNITED STATES Patented January 10, 1905.

PATENT OEEICE.

FIRE-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 779,435, dated January 10, 1905.

Application filed April '7, 1904. Serial No. 201,964.

To all whom/ it may concern:

Be it known that we, JAMES E. MURRAY and CHARLES NUHRING, citizens of the United States', residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Firethe separate compartments maybe readily united or mingled together to form the fireextinguishing' medium and to generate the pressure with which to discharge the same upon the fire.

Another object is to provide improved means for sealing the respective liquids in their compartments and for breaking the seal to liberate and Yunite the liquids when desired for use.

It further consists in certain details of form, combination, and arrangement, all of which will be more fully set forth in the description of the accompanying drawings, in which- Figure l is acentral vertical section through a {ire-extinguisher embodying our invention. Fig. 2 is a top plan view of the same with the cap and central receptacle removed. Fig. 3 is a perspective view of the upper portion of the middle or second compartment.

In devices heretofore in use for extinguishing fires it has been customary to employ either two liquids or a liquid and a solid, by the union of which a compound of liquid and gas was produced adapted to extinguish the iii-e. We have discovered that by employing three or more chemical substances, preferably in the liquid form in order that theyT may more quickly combine to produce the desired compound, we are enabled to produce a much more eiiicient compound of liquid and gases for the purpose.

In the accompanying drawings, A represents a metallic tank provided with a screwthreaded cap B, having a handle b for convenience in handling and for screwing the cap in place. Within the tank A is located a receptacle or jar C, preferably of glass or other vitrified material. This jar is preferably supported relative to the tank A by means of lugs c, engaging an annular iiange c near the mouth of the tank, and held in place at the opposite end by a stud d, entering a recess (Z/ in the bottom of the jar C, the cap B engaging the upper face of the jar to hold it in contact with the iiange c. The upper edge of the jar C is notched at c to permit the liquid in the tank to enter the recess beneath the cap when the tank is inverted.

I/Vithin the jar C, a short distance below the notches c, is an annular rib or iiange E, upon which is seated the flange c of the inner compartment or jar F, which depends from said flange e into the jar C.

Cr represents a cap seating on the upper face of the jar F and provided with a central opening g and a flange g. A plug' or valve H, supported on a stem 7L, which passes through the cap B, serves to close the opening g, while a yoke I, attached to the stem, engages the flange g@ .I represents a cross-bar at the outer end of the stem t, by means of which the stem and parts H I may be drawn toward the cap to break the seal and permit the contents of the several compartments to unite.

In practice the tank is partly filled with a liquid of a non-corrosive nature-for instance, a solution in water of bicarbonate of soda. The jar C is then introduced and partly filled with a liquid, say a solution of ammonium chlorid in water. The jarF is thenintroduced and nearly filled with sulfuric acid. The cover Cr is then placed in position and the joint sealed with parafn or other suitable sealing material M, after which 4the metal cap B, stem t, and yoke I are adjusted to the position indicated in the drawings and the metal cap screwed down tightly in place. I/Vhen required for use, the cross-bar of the stem is pulled out, which first retracts the valve H and then breaks the seal and lifts the cap Gr by means of the yoke I. rIhe tank is then inverted, whereupon the contents of the two jars IOO iioW out and mingle with the contents of the tank, being quickly eiected by reason of the chemical reaction taking place between the respective liquids. rIhe result of the reaction is thata greatly-increased amount of non-combustible gas is generated, which gases are partly absorbed in the liquid and partly serve to generate a pressure by means of which the liquid is discharged upon the fire, where the liquid from its nature, the non-combustible gases carried thereby, and the tendency of the liquid to generate non-combustible gases in contact With the lire has a greatly-increased capacity to extinguish fire.

By storing the chemicals in the extinguisher all in the liquid form no time is required for their solution previous to use, and the reaction takes place with great rapidity and a uniform product is formed and discharged.

IVe do not Wish to limit ourselves to the particular form o't' apparatus shown, as our invention is capable of considerable modiiication Without departing from the principle thereof.

Having described our invention, what We claim isf 1. In an apparatus of the character indicated, a tanki'rom which the extinguishing materials are adapted to be discharged by the pressure of carbonic acid generated at the time of use, aplurality of receptacles located therein one within the other, means Vfor closing and sealing said receptacles, and mechanism operated i'rom the exterior oi' the tank for breaking the seal and opening the mouth of the respective receptacles to unite the contents of the tank and respective receptacles into a single mixture.

2. In an apparatus oi' the character indicated, a tank, a plurality of receptacles located therein, one Within the other and adapted to keep separately from each other a plurality of chemicals in solution` a sealed lid closing the mouth of the respective receptacles, and means operated Vfrom the exterior oi the tank for brcakii'ig the seal and uniting the contents of the respective receptacles and tank, wherebythe respective chemicals are at all times retained in solution and ready lfor instant combination and use.

3. In a lire-extinguisher 'from which the extinguishing' materials are adapted to be discharged by the pressure of carbonic acid generated at the time of use, a tank holding an alkaline solution, a receptacle located Within the tank holding in solution other chemicals adapted to generate extinguishing-gases under heat of the iire, a receptacle located Within said first-named receptacle containing' acid, means Jfor sealing said receptacles to prevent any reaction and deterioration of said chemicals from long standing, and mechanism operated from the exterior of the tank for breaking the seal to unite the contents of the respective receptacles and tank when required for use.

4. In an apparatus of the character indicated, a tank from which the extinguishing materials are adapted to be discharged by the pressure of carbonic acid generated at the time of use, a plurality of receptacles located within the tank, one of said receptacles serving` to close the mouth of the other, and mechanism to unite the contents of the respective receptacles and tank When required for use.

5. In an apparatus of the character' indicated, a tank from Which the extinguishing -materials are adapted to be discharged by the pressure of carbonio-acid gas generated at the time oi' use, a receptacle located Within the tank, a second receptacle closing and sealing the mouth of said first-namedreceptacle, and mechanism operated from the exterior of the tank for uniting the contents of the respective receptacles and tank when required for use.

6. In a [ire-extinguisher, a tank, a receptacle seating upon a projection near the mouth of the tank, a passage communicating with the tank near the mouth of said receptacle, a ledge Within the receptacle below said passage, a receptacle located within said rstnamed receptacle seating' upon said ledge, a cap adapted to close and seal both receptacles, and means for detaching said cap to unite the contents of the tank and receptacles when required i'or use.

7. In an apparatus of the character indicated, a tank, from which the extinguishing materials are adapted to be discharged by the pressure of carbonio acid generated at the time of use, a plurality ot' receptacles located therein one within the other, a cap closing and sealing the mouth oll both receptacles, and means 'for detaching the cap to unite the contents ol? the tank and both receptacles when required for use.

In testimony whereof we have affixed our signatures in presence of two Witnesses.

J AMES E. MURRAY. CHARLES NUHRING.

Witnesses: n

C. W. MILES, A. MCCORMACK.

IOO 

